Table 3.

One-Year Cost-effectiveness of In-Person and Telephone Conference Call Lifestyle Intervention from the Payor Perspective

	MNT	In-person LI	Telephone LI
Cost analysis*
Intervention cost (95% CI)	$275 (243–308)	$1749 (1622–1876)	$1750 (1624–1876)
Change in glucose-lowering medication cost, months 0–12, mean (95% CI)	$316 (−111  to729)	− $369 (− 767 to 3)	$64 (− 348 to 488)
Total cost (95% CI)	$591 (162–1005)	$1380 (962–1772)	$1814 (1384–2255)
Incremental cost compared to MNT	-	$789 (210–1365)	$1223 (629–1826)
Incremental effectiveness compared to MNT
Incremental weight change (kg)	-	2.46	2.53
Incremental weight change (%)	-	2.67	2.83
Incremental number of patients with 5% weight loss	-	0.27	0.22
Cost-effectiveness compared to MNT
Incremental cost per kg lost	-	$321	$483
Incremental cost per 1% weight lost	-	$296	$432
Incremental cost per additional person with 5% weight loss	-	$2960	$5613

*Costs calculated as changes relative to baseline; per-person cost reported in 2018 US dollars; incremental changes compared to MNT

Assumptions: 140 participants in steady state over 1 year (no explicit startup cost). Personnel costs in the intervention arm include 2 FTE dietitians, 10% oversight time from experienced dietitian or manager, 1 full-time administrative coordinator, and 5% physician FTE for medical management and oversight. Since personnel time is calculated on an FTE equivalent, the FTE allocation was considered to include start-up/training costs